[1] [1] Maiman T H. Stimulated optical radiation in ruby. Nature, 1960, 187 (4736): 493–494

[2] [2] Collins R J, Nelson D F, Schawlow A L, Bond W, Garrett C G B, Kaiser W. Coherence, narrowing, directionality, and relaxation oscillations in the light emission from ruby. Physical Review Letters, 1960, 5(7): 303–305

[3] [3] Hellwarth R W. Advances in Quantum Electronics. New York: Columbia University Press, 1961

[4] [4] Koechner W. Solid-State Laser Engineering. New York: Springer, 2006

[5] [5] McClung F J, Hellwarth R W. Giant optical pulsations from ruby. Journal of Applied Physics, 1962, 33(3): 828–829

[6] [6] Zinth W, Laubereau A, Kaiser W. The long journey to the laser and its rapid development after 196

[7] [7] The European Physical Journal H, 2011, 36(2): 153–181

[8] [8] Grishin M. Cavity dumping versus stationary output coupling in repetitively Q-switched solid-state lasers. Journal of the Optical Society of America B, 2011, 28(3): 433–444

[9] [9] Sharma A K, Raghuramaiah M, Mishra K K, Naik P A, Kumbhare S R, Gupta P D. Characteristics of a stable, injection Q-switched Nd: phosphate glass regenerative amplifier for a chirped pulse amplification based table top terawatt laser system. Optics Communications, 2005, 252(4-6) 369–380

[10] [10] Helal O, Liu Z, Tan Y, Ding Y, Cai H. Different efficiency mechanisms inside normal operation, Q-switched and amplified Nd: YAG pulsed laser. International Journal of Applied Physics and Mathematics, 2013, 3(1): 46–51

[11] [11] Hecht J. A short history of laser development. Applied Optics, 2010, 49(25): F99–F122

[12] [12] Degnan J J. Theory of the optimally coupled Q-switched laser. IEEE Journal of Quantum Electronics, 1989, 25(2): 214–220